Lock



L. E. CANTRELL.

LOCK. APPLICATION FILED AUG-2621919.

' Patented June 22, 1920.

2 SHEETSSHEET 2. 5

INVENTOR [6e 1 (Yd/dwell Arm/Mrs WITNESSES HJZUM LEE EDWIN GANTRELL, OF NASHVILLE, TENNESSEE.

LOCK.

Specification of Letters Patent.

Patented June 22, 1920.

Application filed August 26, 1919. Serial No. 319,969.

To all whom it may concern:

Be it known that I, LEE E. CANTRELL, a citizen of the United States, and a resident of Nashville, county of Davidson, and State of Tennessee, have invented a new and Improved Lock, of which the following is a full, clear, and exact description.

This invention relates to looks, more particularly to pay-as-you-enter locks.

An object is to provide a lock for doors which allows a person to enter the door on depositing the required coin in the look.

A further object of the invention is to provide a form of pay-a s-you-enter lock which is provided with means for employing the inserted coin to form a cross link in order to connect a bolt with an operating handle to permit the operator to withdraw the bolt through the agency of the inserted coin. It is a purpose to embody a money register within the lock to count the number of coins deposited in the lock, and to count the number of entrances through the door upon which the pay-as-you-enter lock is installed.

It is also a feature of this invention to provide a legend or sign on the lock to show when the lock has been operated and a person passed through the door upon which the lock is installed.

lVith the above principal objects, and others, in view, the invention has relation to a combination and arrangement of parts, one practical example of which is described in the following specification, specifically pointed out in the appended claims and portrayed in the accompanying drawings, wherein:

Figure 1 shows the pay-as-you-enter lock in front elevation with the hinged cover unlocked and pivoted back to expose the working parts.

Fig. 2 shows a sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 shows a sectional view taken on the line 8-3 of Fig. 1.

Fig. 4. shows a sectional view taken on the line 4-4 of Fig. 1, illustrating parts in plan view.

Fig. 5 shows a front elevation of the payas-you-enter lock with the cover lid down and locked in position. This view shows the operating handle, the coin registering device, and the sign or legend to indicate that the compartment which the lock closes is empty.

In constructing a lock according to the principles of my invention, I employ a casing in which is mounted a slidable bolt pro vided with an unlocking handle fitted on the outside of the casing. A coin guide is associated with the bolt to guide a coin into position which coin joins the bolt and the handle in order that said bolt may be retracted from its position in the keeper of a door sill when the handle is depressed. A COlIl registering means is associated with the bolt and coin guide which causes the register to count the number of times the lock is opened. Other features and details of my invention are brought out as the description is developed.

Referring now more in particular to the drawings, the numeral 6 designates a casing in which the operating mechanism is mounted. The casing is provided with an upwardly hinged door cover 7 hinged at 8. The lower part of the casing is provided with a downwardly hinged coin receptacle 9 hinged at 10. The coin receptacle 9 is pro vided with a lock 11 which may be periodically opened to remove the coins from the casing or coin receptacle.

A look bolt 12 is slidably confined in the casing, and retained in position by a guide 13 arranged adjacent one end of said bolt and guided through the side walls of the casing at the other end of said bolt. The bolt is provided with a longitudinal slot 1-1, and a slot 15 is cut transversely of this longitudinal slot. The slots mentioned are formed adjacent the forward end of the bolt. At the rear end of the bolt there is formed a recess cut in the face of the bolt adjacent the casing. This recess forms a lug 1G. An inner turnknob 17 is journaled in the casing and has fixed thereto a rocker arm 18 whichlies in position within the recessed portion of the bolt, and lies adjacent the lug 16. By turning the turn-knob 17 the bolt 12 is moved back and forth to un lock itself from a keeper fitted in an adjacent door sill, not shown. The inner turn knob is provided on the inside of the com is provided with a leaf spring 23 fixed to the casing and adapted to impress'an upward movement on the outer end of the arm 21 in order to confine the upper end of the bell crank arm in forwardly limited posi tion in the slot 14 of the bolt. An operating handle 24-is journaled in the door cover 7. The operating handle is provided with an extension member 25 which has a rectangularshaped aperture formed in the end thereof. An ordinary roll-back device, consisting of the arm 28 is pivoted on the casing, and provided with a square boss 29 which --registers with the recess in the extension member 25. A stop is fixed on the easing to limit the upward travel of the arm 28. The arm 28 of the roll-back is rockably confined between the stop 30 and the face of the bell crank arm 21.

Bydepressing the operating handle 24 the roll-back arm 28 displaces the bell crank arm downwardly to impress rearward travel of the arm 20 through the slot 14. This action may take place without moving the bolt, since no fixed relation exists between the bell crank member and said bolt. This allows the lock mechanism to be moved back and forth without damage or strain on the parts when carelessly and unnecessarily operated.

A guide is employed to guide a coin in a position to fix the bell crank member relatively to the bolt in order that the bolt 12 may be retracted into an unlocked position by moving the handle 24 downwardly to admit passage through the door held by this look mechanism. This coin guide comprises the member 31 secured to the inner face of the casing. The guide is completed by a movable plate 32 which has a register trip 33 formed on the lower end thereof. The upper portion of the movable plate 32 is integrally formed with a bell crank 34. The

- parts 32 and 33 are pivotal about the bell crank center'34. The plate member 32 will preferably have an angular position to bring it into contiguous relation with the lower end of the guide member 31.

A money registering device 35 is fixed to the casing and provided with an operating lever 36. The operating lever 36 and the register trip 33 cooperate to impress a rearward movement on the lever 36 when the trip 33 moves rearwardly about the bell crank center 34. "A coin support plate comprises a horizontal part 37 with a vertical bracket 38, and thisdevice is fixed to the I side of the casing beneath the coin guide elements.

This coin guide element is made in the form of a bracket, as above described, and secured to the side of the casing with a screw 39 passed through a slot 27, said slot '27 being cut in the bracket part 38. This allows vertical adjustment of the coin sup- 7 the lock'to aejust it to receive coins of different denominations. In case thelock is adjusted to open when a 5e coin is deposited, the coin support plate 37 will be adjusted comparatively close to the guides 31 and 3:2. In case a coin of large denomination is to be used to 'gain entrance to the compartment, or to operate the lock the coin support member 37 will be lowered and spaced somewhatdistant from the lower ends of p the guides 31 and By the proper vertical adjustmentof the ele'ment37 a coin of varying diametrical size may be made to actuate this lock. A coin slot 45 is formed in the door cover"adjacenti the guides 31 and 32.

A sign or legend plate 40 is mounted upon a plate 41, and the plate 41 is pivoted to the back wall 6 said pivot being pointed out by the numeral 42- Signs or legends are stamped or printedon the number 40, and the legends employed will immediately informone whether or not the compartment locked by this device, is accessible for use. A link 45 connects the bell crank34 with the member 41,v and it will be seen how the bellcrank 34 exercises a control over the legend plate 40 to exhibit to view the proper legend or sign. Another bell crank is pivotally mounted upon a pin 46, and the bell crank comprises a depending finger 47' the lock and has closed the passage across the slot 15 in order to lock the bolt and arm 20 together. When the handle24 is actuated the arm 20 moves the bolt rearwardly and the projecting rim of the coin likewise carries the guide member 32 along with the bolt. This causes the bell crank 34 to pivot about its axis drawing downwardly the legend plate 40 to exhibit to view the word occupied in front of the window 48. This downward movement of the legend plate 40 pushes the depending finger 47 into the dotted line position. The person entering the door may then turn the inside knob 17 to return the bolt 12 to locked position,

hen the person again turns the knob 17 to unlock the door from the inside, the arm 18 impinges the finger 47. and pushes upwardly on the link 49 causing the legend plate to move back in the original position to disclose the lower exhibited side in Fig. 1.

In further describing the operation of the machine it will be understood that the coin slot 45 guides a coin into position between the spaced members 31 and 32. The coin drops upon the plate 37 and is held in a vertical position between the guides 31 and 32. The rim of the coin also passes into position within the slot 15 and across the slot 14 of the bolt. The coin, therefore, forms a bar or cross link across the slot let to prevent passage of the bell crank arm 20. When the operating handle 24 is displaced downwardly the bell crank arm 20 impinges the coin and thus fixes the bell crank and bolt relatively one with the other. This action on the part of a deposited coin causes the bolt 12 to be retracted into the casing and from the adjacent keeper, not shown, to permit the depositor of the coin to open the door and pass therethrough.

This lock is presented to fulfil certain need prevalent for a device of this character, and is efiective in the accomplishment of the desired purposes.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is:

l. A pay-as-you-enter lock mechanism, comprising in combination; a casing, a bolt slidably retained therein, said bolt provided with a longitudinal slot and a slot cut transversely of the longitudinal slot, a coin guide plate fixed to the casing, another coin guide plate having an out-turned trip finger, a bell crank made on the upper end of the second-named coin guide plate and pivoted to the casing, a legend plate, a link connecting the legend plate with the bell crank, a register, and an arm made on the register to engage the trip finger.

2. A pay-as-you-enter lock mechanism, comprising in combination; a casing, a bolt slidably retained therein, said bolt provided with a longitudinal slot and a slot cut transversely of the longitudinal slot, a coin guide plate fixed to the casing, another coin guide plate having an out-turned trip finger, a bell crank made on the upper end of the second-named coin guide plate and pivoted to the casing, a legend plate, a link connecting the legend plate with the bell crank, a register, an arm made on the register to engage the trip finger, said bolt having a notch cut in the inner end thereof, and a rocker arm confined in the notch adapted to retract the bolt into the casing.

3. A pay-as-you-enter lock mechanism, comprising a casing, a bolt slidably confined in the casing and provided with a slot to receive a coin, a guide plate fixed to the casing in line with the slot, another guide plate pivoted to the casing adjacent the firstnamed guide plate and the two guide plates cooperating to hold a coin in vertical position in the slot of the bolt, a coin-support plate secured to the casing underneath the lower ends of the coin guides, and a means for adjusting the slide of the coin-support plate to adjust the operation of the lock to coins of variable dimensions.

A pay-as-you-enter lock mechanism, comprising a casing, a bolt slidably confined in the casing and provided with a slot to receive a coin, a guide plate fixed to the casing in line with the slot, another guide plate pivoted to the casing adjacent the firstnamed guide plate and the two guide plates cooperating to hold a coin in vertical position in the slot of the bolt, a coin-support plate secured to the casing underneath the lower ends of the coin guides, a means for adjusting the slide of the coin-support plate to adjust the operation of -the lock to coins of variable dimensions, said bolt having a slot formed longitudinally therein and intercepting the aforesaid coin slot, of said bolt, and a bell crank pivoted in the casing, one arm of the bell crank being movably confined in the longitudinal slot which moves freely in the slot until a coin is dropped in the slot to lock the arm and bolt together to work in joint relation.

LEE ED'WIN CANTRELL. 

